EP4226061A1 - Agencement d'étanchéité pour roulements de roue et ensemble roulement de roue doté d'agencement d'étanchéité - Google Patents

Agencement d'étanchéité pour roulements de roue et ensemble roulement de roue doté d'agencement d'étanchéité

Info

Publication number
EP4226061A1
EP4226061A1 EP21790366.5A EP21790366A EP4226061A1 EP 4226061 A1 EP4226061 A1 EP 4226061A1 EP 21790366 A EP21790366 A EP 21790366A EP 4226061 A1 EP4226061 A1 EP 4226061A1
Authority
EP
European Patent Office
Prior art keywords
axial
sealing lip
peripheral surface
sealing
radial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21790366.5A
Other languages
German (de)
English (en)
Inventor
Branko Katana
Marco Krapf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP4226061A1 publication Critical patent/EP4226061A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6618—Retaining the grease in or near the bearing in a reservoir in the sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3456—Pressing means without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/12—Force, load, stress, pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/30—Angles, e.g. inclinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/46—Gap sizes or clearances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/60—Thickness, e.g. thickness of coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
    • F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/045—Mounting or replacing seals

Definitions

  • the present invention relates to a sealing arrangement for a wheel bearing, a use of such a sealing arrangement for sealing a wheel bearing and a wheel bearing unit with such a sealing arrangement.
  • Seals for bearings such as rolling bearings, plain bearings, etc. are well known. They should prevent dirt from penetrating the bearing and, if necessary, prevent lubricant from escaping from the bearing in order to ensure the longest possible service life of the bearing.
  • the centrifugal sheet metal is usually connected to a rotating wheel hub or a rotating wheel bearing flange and can form an additional sealing labyrinth together with another sheet metal ring arranged in a stationary part of the wheel suspension.
  • the sealing lips of at least one sealing ring extend in the axial or radial direction and are guided in a sliding manner on the centrifugal plate.
  • the aforementioned components of the seal can also be an integral part of a seal cartridge in which the sealing lips are axially prestressed in a defined manner.
  • the wheel bearing there is a mainly axially directed opening on both sides in the axial direction, between the two involved rotating partners, which are coupled to one another by the wheel bearing.
  • the vehicle-side axial opening is directed generally axially and is occasionally covered by a bell housing of an adjacent constant velocity universal joint. Due to the directly adjacent wheel bearing flange, the opening on the wheel flange side in the axial direction is radially outward directed and so very easy to reach for e.g. splashing water.
  • the slinger made of formed sheet metal is inserted on the wheel bearing flange adjacent to the wheel bearing flange before the wheel bearing is installed on the wheel hub.
  • shock, sustained vibration loads, or other causes may cause the slinger to slip, causing the slinger to move toward the rolling elements and damaging them upon contact, resulting in wheel bearing failure.
  • the sealing arrangement according to the invention for a wheel bearing has a carrier element, an elastic sealing element and a counter-rotating plate.
  • the carrier element can be connected to a first bearing part of the wheel bearing.
  • the elastic sealing member has an elastic main body disposed on the support member. Furthermore, the elastic sealing element has at least a first axial sealing lip, a second axial sealing lip and at least one radial sealing lip, which extend away from the elastic main body.
  • the counter plate is connectable to a second bearing part and arranged with one side facing the carrier element such that the first axial sealing lip, the second axial sealing lip and the radial sealing lip are in rubbing contact with the counter plate.
  • the first axial sealing lip is designed in such a way that it bears against the counter-rotating plate with a first contact pressure.
  • the second axial sealing lip is designed in such a way that it bears against the counter-rotating plate with a second contact pressure.
  • the radial sealing lip is designed in such a way that it bears against the counter-rotating plate with a third contact pressure.
  • the pressing forces are defined as a function of a predetermined force ratio.
  • the advantage of the solution according to the invention lies in particular in the fact that the sealing lips are reliably prevented from lifting off the counter-rotating plate. The lifting of the sealing lips is reliably prevented for all pressure conditions that can usually occur within the sealing arrangement during operation. Furthermore, contact between the two axial sealing lips can also be avoided in this way.
  • the predetermined force ratio defines the contact forces in such a way that the contact forces of the axial sealing lips prevent the sealing lubricant, e.g.
  • the sealing arrangement according to the invention can also be used reliably in very small installation spaces.
  • the contact forces of the two axial sealing lips are essentially the same.
  • the contact force of the radial seal lip is substantially half that of the contact forces of the axial seal lips to reduce friction between the radial seal lip and the counter plate, thus facilitating sliding between the radial seal lip and the counter plate without reducing sealing performance .
  • the main body of the elastic sealing element is arranged at a first axial distance from the counter-rotating plate in the axial direction, at least in the region of the axial sealing lips.
  • the first axial distance defines a clearance, the sealing space, which is formed between the main body and the reaction plate and serves to contain the sealing lubricant. Furthermore, the first and second axial sealing lips extend through this free space to the counter-rotation plate in order to prevent the sealing lubricant from escaping from the free space and the ingress of dirt into the free space.
  • the first axial distance is selected depending on the available space for the seal assembly, and can, for example, equal to or greater than 1.7 mm, alternatively equal to or greater than 1.95 mm, or also equal to or greater than 2.0 mm.
  • the first axial sealing lip and the second axial sealing lip also have a first radial distance from one another in the radial direction on the counter-rotation plate and a second radial distance from one another on the carrier element, the first radial distance and the second radial distance depending on the first axial distance are defined.
  • the design of the first and the second radial distance as a function of the first axial distance makes it possible to reliably avoid contact between the first axial sealing lip and the second axial sealing lip in the assembled and in the operating state.
  • the first radial distance is preferably greater than the second radial distance and can be, for example, 1.24 times, 1.15 times or 1.03 times the first axial distance.
  • the second radial distance can be, for example, the quotient of the first axial distance as a dividend and 1.27 or 1.45 or 1.59 as a divisor. In other words, the second radial distance can be, for example, approximately 0.787 times, 0.69 times or 0.629 times the first axial distance.
  • the first axial sealing lip on the main body has a first radial thickness in the radial direction and the second axial sealing lip on the main body has a second radial thickness in the radial direction, the first radial thickness and the second radial thickness depending on the second radial distance are defined. Since the second radial distance is defined as a function of the first axial distance, the first radial thickness and the second radial thickness can also be defined as a function of the first axial distance.
  • the design of the first and the second radial thickness as a function of the second radial distance or the first axial distance makes it possible for contact between the first axial sealing lip and the second axial sealing lip to be reliably avoided in the assembled and in the operating state.
  • the first radial thickness is preferably about the same as or slightly less than the second radial thickness and may be, for example, 0.50, 0.40 or 0.38 times the second radial distance.
  • the second radial thickness can be, for example, 0.50 times, 0.45 times or 0.40 times the second radial distance.
  • the first axial sealing lip and the second axial sealing lip are arranged obliquely with respect to an axis of rotation of the wheel bearing, with a diameter of the sealing lip increasing in the axial direction from the main body to the counter-rotating plate.
  • an inner peripheral surface of the first axial sealing lip is arranged at a first inner peripheral surface angle to the axis of rotation and an outer peripheral surface of the first axial sealing lip is arranged at a first outer peripheral surface angle to the axis of rotation, the first outer peripheral surface angle being defined as a function of the first inner peripheral surface angle.
  • an inner peripheral surface of the second axial sealing lip is arranged at a second inner peripheral surface angle to the axis of rotation and an outer peripheral surface of the second axial sealing lip is arranged at a second outer peripheral surface angle to the axis of rotation, the second outer peripheral surface angle being defined as a function of the second inner peripheral surface angle.
  • the thickness of the axial sealing lips changes, starting from the carrier element up to the counter-rotating plate. This supports or reinforces the effect of avoiding contact between the two axial sealing lips, which is already achieved by the inclined position of the two axial sealing lips in relation to the axis of rotation. If the two axial sealing lips touch, it is no longer possible to reliably prevent the sealing lubricant from escaping from the sealing chamber. Therefore, contact between the two axial sealing lips must be avoided.
  • the first outer peripheral surface angle is greater than the first inner peripheral surface angle by 4.7°, for example, with a tolerance of ⁇ 1°.
  • the first Inner peripheral surface angle for example, between 33 ° and 36 °.
  • the first outer peripheral surface angle is, for example, 0.553° to 0.58° smaller than the first inner peripheral surface angle, with a tolerance of ⁇ 1°.
  • the second outer peripheral surface angle is greater than the second inner peripheral surface angle by 5.1°, for example, with a tolerance of ⁇ 1°.
  • the second inner peripheral surface angle can be between 36° and 39°, for example.
  • the second outer peripheral surface angle is, for example, 0.335° to 0.352° smaller than the second inner peripheral surface angle, with a tolerance of ⁇ 1°.
  • a third axial sealing lip is also provided, which serves as a pre-seal.
  • the pre-seal does not extend as far as the counter-rotation plate and creates a catch labyrinth that is designed to direct penetrating solid particles back to the outside and thereby protect the axial sealing lips from dirt or dirty water.
  • FIG. 1 shows a schematic longitudinal sectional illustration of a sealing arrangement on the wheel flange side according to an embodiment of the invention.
  • FIG. 2 shows a schematic longitudinal sectional illustration of a vehicle-side sealing arrangement according to an embodiment of the invention.
  • FIG. 3 shows a schematic longitudinal sectional illustration of a sealing arrangement on the wheel flange side according to a further embodiment of the invention.
  • the figures are only of a schematic nature and serve only to understand the invention. Identical elements are provided with the same reference symbols.
  • the wheel bearing 2 is designed as a rolling bearing with rolling elements 4, which are held by a cage 5 in rolling raceways of bearing rings 6.
  • the sealing arrangement 1 has a carrier element 7 which is fixed to one of the long rings 6 with a fastening section 8 .
  • An elastic sealing element 9 is arranged on the carrier element 7 and has an elastic main body 10 from which a first axial sealing lip 11 , a second axial sealing lip 12 and a radial sealing lip 13 extend.
  • the sealing arrangement 1 has a counter-rotation plate 14 which is arranged facing the carrier element 7 in such a way that it is in rubbing contact with the axial sealing lips 11 , 12 and the radial sealing lip 13 .
  • the counter-rotation plate 14 is fixed with a fastening section 15 to the wheel bearing flange 3 which is formed integrally with the other of the bearing rings 6 (not shown here).
  • an elastic sealing element 16 is arranged on the counter-rotation plate 14 in the region of the fastening section 15 and seals a coupling point between the fastening section 15 and the wheel bearing flange 3 .
  • the sliding contact is graphically illustrated by the overlapping representation of the sealing lips 11, 12, 13 with the counter-rotating plate 14.
  • the sealing lips 11, 12, 13 do not overlap with the counter plate 14, but rest against the counter plate 14 in such a way that during a rotational movement of the wheel bearing flange 3—and thus the counter plate 14—a rubbing contact occurs between the sealing lips 11, 12, 13 and the counter-rotation plate 14 is formed.
  • the sliding contact is individual for each of the sealing lips 11 , 12 , 13 and is defined in that the sealing lips 11 , 12 , 13 each bear against the counter-rotating plate 14 with a predetermined contact pressure F.
  • the first axial sealing lip 11 bears against the counter-rotating plate 14 with a first pressing force Fi and the second axial sealing lip 12 bears against the counter-rotating plate 14 with a second pressing force F2.
  • the radial sealing lip 13 bears against the counter-rotating plate 14 with a third contact pressure force F3, with the first and second contact pressure forces Fi, F2 being applied in the axial direction A and the third contact pressure force F3 being applied in the radial direction R.
  • the contact pressure forces Fi , F 2 and F3 are in a predetermined force ratio to one another, which defines the contact pressure forces Fi , F 2 , F3 as a function of one another as follows:
  • ⁇ 0.9 N indicates a tolerance range for the calculation of the forces.
  • the counter-rotation plate 14 is arranged in the axial direction A at a first axial distance l Ai at a distance from the carrier element 7 with the elastic main body 10, so that a free space, ie a sealing space 17, is formed.
  • the axial sealing lips 11 , 12 extend essentially in the axial direction A obliquely through the sealing chamber 17 to the counter-rotation plate 14 and are spaced apart from one another in the radial direction R, with the first axial sealing lip 11 being arranged further inward than the first axial sealing lip 11 viewed in the radial direction R second axial sealing lip 12.
  • the distance between the two axial sealing lips 11, 12 is not constant over their length, that is, a first radial distance l Ri between the first axial sealing lip 11 and the second axial sealing lip 12 on the counter plate 14 differs from a second radial distance l R2 between the first axial sealing lip 11 and the second axial sealing lip 12 on the carrier element 7.
  • Both the first radial distance l Ri and the second radial distance l R2 are defined as a function of the first axial distance IAI.
  • first axial sealing lip 11 on the carrier element 7 has a first radial thickness d Ri
  • second axial sealing lip 12 on the carrier element 7 has a second radial thickness d R2 .
  • the two radial thicknesses d Ri , d R2 are in turn defined as a function of the second radial distance l R2 and are therefore also defined as a function of the first axial distance l Ai :
  • the thickness of the axial sealing lips 11, 12 also changes over their direction of extension.
  • This change in thickness is indicated by a ratio between an inner peripheral surface angle and an outer peripheral surface angle of the respective axial sealing lip 11, 12.
  • An angle between an inner peripheral surface of the respective axial sealing lip 11, 12 and an axis of rotation (not shown) of the sealing arrangement 1 is referred to as an inner peripheral surface angle
  • an angle between an outer peripheral surface of the respective axial sealing lip 11, 12 and the axis of rotation of the sealing arrangement 1 is referred to as an outer peripheral surface angle designated.
  • the outer peripheral surface angle is dependent on the inner peripheral surface angle.
  • a first inner peripheral surface angle Qi of the first axial sealing lip 11 is between 33° and 36°.
  • a second inner peripheral surface angle ⁇ 1 of the second axial sealing lip 12 is between 36° and 39°.
  • ⁇ 1° indicates a tolerance range for the design of the angle.
  • the sealing arrangement 1 is designed on the one hand via the contact pressure forces of the sealing lips 11, 12, 13 on the counter-rotating plate 14 and on the other hand as a function of the first axial distance l i .
  • the first axial distance l Ai is directly related to the space available for the sealing arrangement 1 . This means that the sealing arrangement 1 is designed essentially as a function of the available installation space and the necessary first contact pressure Fi.
  • the sealing arrangement 1 which is arranged in the axial direction A between a wheel bearing 2 and a body 18, with both the wheel bearing 2 and the body 18 only being shown partially.
  • the structure of the sealing arrangement 1 is very similar to that of the embodiment shown in FIG. 1, which is why only the differences are discussed below. Due to a different installation position of the sealing arrangement 1, which is arranged mirror-inverted compared to FIG. 1, the first axial distance l Ai is equal to or greater than 1.95 mm. This results in the following length and angle ratios for the embodiment shown here: IRI - IAI * 1.03
  • the force ratio of the pressing forces F 1 , F 2 and F 3 corresponds to the force ratio described in relation to FIG.
  • Fig. 3 shows a further embodiment of the sealing arrangement 1 according to the invention. It can be seen that the carrier element 7 is designed slightly differently and the sealing arrangement 1 is shown alone, without reference to adjacent elements. In this embodiment too, the force ratio of the pressing forces F 1 , F 2 and F 3 corresponds to the force ratio described in relation to FIG. 1 .
  • the first axial distance l i is equal to or greater than 2 mm.
  • l Ri IAI * 1.15 l
  • Ri IAI / 1.45
  • Ri l
  • 0.50 (IAI / 1.45) * 0.50
  • d l
  • l R2 * 0.50 (IAI / 1.45) * 0.50
  • the sealing arrangement 1 shown here also has a third axial sealing lip 19 which does not extend as far as the counter-rotating plate 14 and is arranged outside of the second axial sealing lip 12 when viewed in the radial direction R.
  • the third axial sealing lip 19 serves as a pre-seal 20 and forms a catch labyrinth in the sealing chamber 17, which is intended to direct particles penetrating from the outside, such as dirt, dirty water, dust, etc., back to the outside.
  • the third axial sealing lip 19 is arranged obliquely outwards at an angle ⁇ relative to the axis of rotation of the sealing arrangement 1, the angle ⁇ here being approximately 30°, for example.
  • FIG. 3 shows an inside diameter Di of counter-rotating plate 14, which is 80 mm here, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

L'invention concerne un agencement d'étanchéité (1) destiné à un roulement de roue, ledit agencement comprenant : un élément de support (7) pouvant être relié à une première partie du roulement de roue ; un élément d'étanchéité élastique (9) comprenant un corps principal élastique (10) situé sur l'élément de support, l'élément d'étanchéité élastique comprenant également au moins une première lèvre d'étanchéité axiale (11) et une seconde lèvre d'étanchéité axiale (12) et au moins une lèvre d'étanchéité radiale (13) s'étendant à l'opposé du corps principal ; et une plaque de contre-courant (14) pouvant être reliée à une seconde partie de roulement et étant positionnée de façon qu'un côté soit orienté vers l'élément de support, de sorte que la première lèvre d'étanchéité axiale, la seconde lèvre d'étanchéité axiale et la lèvre d'étanchéité radiale sont en contact coulissant avec la plaque de contre-courant. La première lèvre d'étanchéité axiale est conçue pour reposer contre la plaque de contre-courant à une première pression de contact (F1) ; la seconde lèvre d'étanchéité axiale est conçue pour reposer contre la plaque de contre-courant à une deuxième pression de contact (F2) ; et la lèvre d'étanchéité radiale est conçue pour reposer contre la plaque de contre-courant à une troisième pression de contact (F3), les pressions de contact (F1 ; F2 ; F3) étant définies en fonction d'un rapport de force prédéfini.
EP21790366.5A 2020-10-06 2021-09-29 Agencement d'étanchéité pour roulements de roue et ensemble roulement de roue doté d'agencement d'étanchéité Pending EP4226061A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020126119.5A DE102020126119A1 (de) 2020-10-06 2020-10-06 Dichtungsanordnung für Radlager und Radlagereinheit mit Dichtungsanordnung
PCT/DE2021/100786 WO2022073548A1 (fr) 2020-10-06 2021-09-29 Agencement d'étanchéité pour roulements de roue et ensemble roulement de roue doté d'agencement d'étanchéité

Publications (1)

Publication Number Publication Date
EP4226061A1 true EP4226061A1 (fr) 2023-08-16

Family

ID=78086963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21790366.5A Pending EP4226061A1 (fr) 2020-10-06 2021-09-29 Agencement d'étanchéité pour roulements de roue et ensemble roulement de roue doté d'agencement d'étanchéité

Country Status (6)

Country Link
US (1) US20230383791A1 (fr)
EP (1) EP4226061A1 (fr)
KR (1) KR20230040373A (fr)
CN (1) CN116097024A (fr)
DE (1) DE102020126119A1 (fr)
WO (1) WO2022073548A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007211791A (ja) * 2006-02-07 2007-08-23 Ntn Corp 車輪用軸受装置
JP2010159791A (ja) * 2009-01-07 2010-07-22 Ntn Corp 車輪用軸受シールおよびこれを備えた車輪用軸受装置
JP2012207769A (ja) 2011-03-30 2012-10-25 Ntn Corp 車輪用軸受装置
JP2017124695A (ja) 2016-01-13 2017-07-20 株式会社ジェイテクト 車輪用軸受装置
JP6936671B2 (ja) 2017-09-15 2021-09-22 Ntn株式会社 シール部材およびそれを備える車輪用軸受装置
JP2020079619A (ja) 2018-11-13 2020-05-28 中西金属工業株式会社 回転用シール

Also Published As

Publication number Publication date
KR20230040373A (ko) 2023-03-22
WO2022073548A1 (fr) 2022-04-14
DE102020126119A1 (de) 2022-04-07
CN116097024A (zh) 2023-05-09
US20230383791A1 (en) 2023-11-30

Similar Documents

Publication Publication Date Title
DE102011003704B4 (de) Labyrinthdichtung eines Radiallagers mit Radialflansch
EP2603708A1 (fr) Ensemble d'étanchéité pour palier de roulement
WO2009156260A1 (fr) Joint d’étanchéité à cassette
WO2019114853A1 (fr) Arrangement d'étanchéité d'un palier de roue
EP1861641B1 (fr) Garniture d'etancheite
DE102017113043A1 (de) Triebrad mit Drehschwingungsdämpfungseinrichtung
WO2019158151A1 (fr) Système de roulement de roue comportant un axe de rotation
DE102017218011A1 (de) Radlageranordnung für ein Fahrzeugrad
DE102022206752A1 (de) Dichtungsanordnung für Lastkraftwagennaben mit radialem Labyrinth
DE102020105299A1 (de) Dichtungsanordnung eines Radlagers
DE102019117942A1 (de) Wellgetriebe und Lagerelement für ein Wellgetriebe
DE102010015200A1 (de) Kasettendichtung
DE102021105258A1 (de) Dichtungsanordnung eines Radlagers
DE102018114677A1 (de) Wälzlager und Dichtungsanordnung mit mindestens zwei Dichtlippen
EP1526310A1 (fr) Dispositif d'étanchéité
EP4226061A1 (fr) Agencement d'étanchéité pour roulements de roue et ensemble roulement de roue doté d'agencement d'étanchéité
EP4179226B1 (fr) Amortisseur de vibrations de torsion
DE102022204801A1 (de) Dichtvorrichtung für eine Lagereinheit
EP1736676A1 (fr) Palier à roulement avec un élément d'étanchéité
EP1819931A1 (fr) Unite de roulement
DE102018105393B3 (de) Dichtring und Dichtungsanordnung, die den Dichtring umfasst
DE102008052726A1 (de) Wälzlager mit Dichtelementen
DE102014209234A1 (de) Dichtungsanordnung
DE102014216059A1 (de) Dichtungsanordnung
DE102008012815B4 (de) Ausrückvorrichtung für eine Kraftfahrzeugreibungskupplung mit einer Dichtanordnung für ein selbstjustierendes Ausrücklager

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230508

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)